Machine for treating hides



No. 618,269. T Patented Jan. 24, I899.

J. HALL.

MACHINE FOR TREATING HIDES, SKINS, 0R LEATHER.

( mplication filed Sept. 9, uses.

6 Sheets-Sheet I.

(No Model.)

Patented Ian. 24, I899.

No. 6I8,26 9.

J.' HALL. MACHINE FOR TREATING HIDES, SKINS, OR LEATHER.

(Application filed Sept. 9, 1898.

6 Sheets-Shaet 2.

(No Model.)

bawmcomz W M Axe awn No. wages.

J. HALL MACHINE FOR TREATING muss, SKFES, GE LEATHER.

(Application fil'd Segt. 9, 1898.)-

Patented Ja n. 24, l899.

' 6 Sheets-Sheet 3.

WKW

No. 6l8,269. Patented Ian. 24, I899. J. HALL.

MACHINE FOR TREATING IDES, SKINS, DB LEATHER.

(Application filed Sept. 9, 1898.) 7 (No Model.) 6-.Sheats-Sheet 4.

WRW aw Dawn/X0 1 No. 6l8,269. Patented Jan. 24, I899. J. HALL.

MACHINE FOR TREATING HIDES, SKINS, 0R LEATHER.

(Application filed Sept. 9, 1898.)

6 Sheets --Shaet 5.

(No Modal.)

Pafented Jan. 24. I899.

J. HALL.

MACHINE FOR TREATING HIDES, SKINS, 0B LEATHEIL' (Application filed Sept.9, 1898.)

8 Sheets-Sheet 6.

(III) Model.)

llNirEn STATES PATENT Eric's.

JOSEPH HALL, or LEEns, ENGLAND.

MACHlNE FOR TREATING HIDES, SKINS, OR LEATHER.

SPECIFICATION forming part of Letters Patent No. 618,269, dated January24, 1899.

Application filed September 9, 1898. Serial No. 690,556- (No model.)

To aZZ whom it may concern:

Be it known that I, JOSEPH HALL, a subject of the Queen of GreatBritain, residing at Leeds, in the county of York, England, haveinvented certain new and useful Improvements in Machines for TreatingHides, Skins, or Leather, of which the following is a specification.

My invention has relation to a machine for treating hides, skins, orleather of the type illustrated in United States Letters Patent No.599,331, granted to me under date of February 22, 1898; and in suchconnection it relates to the construction and arrangement of such amachine.

My present invention is an improvement upon the machine of my priorpatent above set forth, said improvements consisting particularly in theconstruction and arrangement of the apron upon which the work issupported, which apron is used in connection with a vertically-movabletable and two working rolls or cylinders, between which the table isadapted to move.

My invention, stated in general terms, consists of a machine of thecharacter described constructed and arranged in substantially the mannerhereinafter explained and claimed.

The nature and scope of my present invention will be more fullyunderstood from the following description, taken in connection with theaccompanying drawings, forming part thereof, in which Figure 1 is afront elevational view, partly broken away, of a machine embodying mainfeatures of my invention. Fig. 2 is a top or plan view thereof. Fig. 3is an end elevation of the machine,certain parts being removed. Fig. 4:is a view similar to Fig. 3, but with the driving mechanism removed.Fig. 5 is a vertical sectional view of the machine. Fig. 6 is an endelevational view of mechanism for stopping the table in its downwardmovement to prevent shifting of the apron. Figs. 7, 8, and 9 are detailviews, enlarged, of the arms forming a part of the mechanism forshifting the apron on the table. Fig. 10 is a detail view illustratingin enlarged front elevation the nipping-bar and accessories. Fig. 11 isa detail view illustrating in enlarged end elevation the means forwithdrawing the springbolts controlling the shifting mechanism for theapron. Fig. 12 is a detail view illustratin g in enlarged end elevationa modified form of means for operating the rollers which draw the aprontaut prior to the presentation of the work on the apron to the action oftheworking rolls or cylinders, and Fig. 13 is a front elevational viewof Fig. 12.

Referring to the drawings, the working rolls or cylinders a C6 arearranged side by side on shafts a having bearings in the swinging armsor levers b. The arms or levers Z) have a fulcrum upon the shaft orspindle b, which has its bearings in the framework 0 of the machine. Thelevers I) also carry the shafts d. The working rolls a Ct are driven inopposite directions from a counter-shaft 6, provided with fast and loosepulleys e and e and with a pulley e and sprocket-wheel e. The shaft 6rests in adjustable bearings e in the framework 6. The shaft of oneroller a is provided with a sprocket-wheel a driven by an endless chaina from sprocket-wheel e while the shaft of the other roller has a pulleya, driven by a crossed belt a from pulley 6 To maintain the chain a andbelt a sufficiently taut, a sprocket-wheel f and a pulley f aremountedin a lever f having its fulcrum f in a bracket f on the frameworkof the machine, in such a manner that the sprocket, pulley, and leverpress with their weight against the chain a and belt a, as illustratedin Fig. 3.

The cylinders or rolls a a are separated from each other in thefollowing preferred manner: On each shaft cl is secured alever 61, eachlever 01 being pivoted, as at d to a vertical rod d guided in thebearings 01 and carrying the fingers d. The framework 0 is provided ator near is upper end with a bracket g, in which is carried a shaft g,which shaft is provided with two levers g and a hand-lever 9 The leversg are each connected by a chain or cord 9 to the pivot 61 of each leverd, so that when the chains or cords g are pulled in one direction therod (Z is lifted and the rolls or cylinders a a are thereby caused toseparate. After the rolls a a have been thus separated the lever h,pivoted, as at h, to the framework 0 and con nected by the forked leverh with a springhandle h is caused by said spring-handle to swing underthe end of that rod (1 which is situated at the driving end of themachine.

In this position the end of the lever 72. rests on a lug 71 and upon therelease of the cord 9 the rod oZ remains supported upon the lever h andthe rollers ct a, are held thereby in separated position and are onlyallowed to approach each other when the spring-handle 7L3 is pushed toone side to move the lever h from under the rod d Between the rolls a ais adapted to slide a vertically-movable table F, which is driven fromthe counter-shaft e in preferably the following manner: On thecounter-shaft e is located a loose sprocket-wheel 19 which is adapted tobe secured to the shaft e by means of a clutch-box p, rotating with theshaft when a boss 13 is forced into contact with the spring-finger 19The boss 1) is operated by a bell-crank lever 19, pivoted, as at p tothe frame a, and also pivoted at its other end to a vertically-arrangedrod 13 carrying a horizontal bar 19 maintained in its horizontalposition by a catch it on the spring-handle h The bar 19 is connected bya cord or chain 19 with the pivotal connection (Z of the levers cZ,operating the cylinders 64 Ct. The sprocket-wheel p on the shaft 6 isconnected by a cord or chain r with a sprocket-wheel r, secured to ashaft 9, having adjustable bearings r in the frame a of the machine. Onthe shaft r are located the two sprocketwheels r which are connected bychains r running over the guide-pulleys T with the sprockets r fixed onshaft o at the base of the machine. The chains 7' are attached, as atr", to the slides 10 forming the sides of the table F. WVhen thespring-handle h is operated to release the lever h from rod d and tothereby permit the rolls a a to approach each other, the horizontal bar13 Will also be released from the catch 72/ and permit the rod 19 todrop. The lever p is thereby operated to force the boss 12 into contactwith the finger p and hence the wheel 19 is locked to the shaft 6 andthe table is raised. When the table F is elevated to its fullest extent,the stops 3, which are carried by the slides k of the table, meet thefingers d of the rod d thereby elevating said rod d and forcing thecylinders a a apart. The chain 19 now lifts the bar 19 and rod 19 andthus throws the boss 1) partially out of contact with the clutch p, andmotion to the table is thereby stopped. The chain 9 is now pulled tolift the rod (Z higher, so that the handle 713 may spring back to carrylever h under rod d and to lift the bar 19 again onto the catch 72. Thetable is now permitted to descend b gravity, its downward movement beingntr lled, if desired, by'any suitable brake (not shown) until it restsat the bottom of the machine upon buffers or cushions a as illustratedin Fig. 6. The immediate support for the work is an apron 70, whichpasses over and is shifted on a roller 7r at the upper edge of the tableF. The ends of this apron k are secured by hooks 7t or other means to anoscillating frame k fixed to a rocking shaft This frame 70 and the meansfor securing the apron thereto are clearly illustrated in Figs. 5 and 9.The rock-shaft k is carried in springbearings Z0 in the lower part ofthe slides 70 of the table F, and to one end of this shaft 70 is secureda rocking lever is of preferably the form illustrated in Fig. 7. Theframework c, adjacent to the lever 7.2 is provided with brackets Z, inwhich work the springbolts Z and Z the springs Z whereof serve tonormally push said bolts into the path of the said rock-lever k Belowthe bolts Z and Z are located the spring-catches Z and Z which catchesare adapted to engage and hold the bolts Z and Z when the same areretracted. As the table Fdescends an arm of lever 70 touches one or theother of the catches Z and Z and releases the same, so as to permit acorresponding bolt Z or Z to shoot out under the influence of its springuntil it extends above the lever 70 and in alinement therewith. When thetable next ascends, the lever Z0 is caused to oscillate or rock, andthus through levers it will shift the apron upon the roller is, so as tobring that part of the work previously unoperated upon into a positionso that the cylinders a can act upon it. After the lever Z0 has passed abolt Z or Z and has been acted upon it is prevented from furthermovement by a pin m, engaging a springquadrant m on the slide 70 of thetable. Upon the next descent of the table the lever 70 releases theother catch to project an opposite bolt into the path of said lever Z0whereby upon the ascent of the table the apron is shifted in an oppositedirection. The bolts are withdrawn automatically by the followingpreferred means:

Referring to Figs. 5 and 11, on the shaft (Z is a pulley I, over whichruns the cord Z fixed at one end t to the frame 0 and passing overanother pulley Z mounted on said frame, the-other end of said cord beingsecured to a lever t pivoted, as at t, and having a projecting nose orlatch :5 On the bracketsZ are pivoted, as at Z, two bell-crank levers Zconnected by a pin and slot, as at Z to a vertical rod Z having a collarZ and guided in a bearing Z When now in the operation of the machine thecord g is pulled, the shaft cZ, carrying pulley Z, is swung outward andthe cord 25? lifts the lever 25 and the rod Z". The levers Z are thusmoved and draw back that bolt Z or Z which is projecting. When in thedescent of the table the cylinders a swing apart, the lever will clearthe collar Z and permit the rod Z and levers Z to drop, thus leavingthebolts Z and Z free to shoot forward upon the further descent of thetable. \Vhen during the ascent of the table the cylinders a are broughttogether, the lever 25 drops and its 7 ing the spring-catches by anarrangement shown in Figs. 1 and 6, in which a hand-lever 'n is pivoted,as at n, in the bed of the machine and is connected by a link n to ashaft n rocking in the machine-bed and carrying the buffers 91 Thebuffers n have two surfaces of varying heights, so that when thehand-lever is pushed in one direction the higher part of the buffer isinterposed below the bottom of the table'F, and thus prevents thedescent of said table sufficiently to keep the lever k from acting onthe catches Z or The hand-lever when pushed in the opposite directionbrings the lower part of the buffer under the table to brake the descentof said table, but not to prevent the lever 7& from operating the boltsZ or Z In Figs. 1 and 10 are illustrated the nipping-bar cc and itsaccessories, designed to clamp the work down upon the top edge of thetable when the table is elevated to present the work to the cylinders.The construction and operation of this bar co and its catches on arefully described in my previous patent, No. 599,331, and furtherdescription in the present application is not deemed necessary.

The cylinders a a may be brought together or separated by a treadlemechanism, as well as by means of the cord 9 as heretofore described.This treadle mechanism is shown in Figs. 3 and 4C, and consists of ashaft w, rocking in the frame 0 of the machine, to which shaft afoot-leverw is secured. 011 the ends of the shaft u; are secured the twocrank-arms M connected by links 10 to bell-crank levers 10 which arepivoted, as at Q05, in the frame 0. These bell-crank levers w are alsoconnected to adjustable rods 20 carrying the pulleys 10 under each ofwhich passes a cord or chain 10 These cords or chains also pass over thepulleys w pivoted in the frame 0, and have their ends secured to blocksto, secured to the shafts (Z. lVhen the foot-lever w is depressed, thelevers 10 and 10 rod 10", and chain 10 act to bring the rollers cttogether.

So far as described the machine of the present application isessentially like that described in my prior patent, with such changes ormodifications as can be readily ascertained by a comparison of thepresent application with said patent. The principal features of thepresent application do not, however, reside in these modifications, butin the mechanisms, to be hereinafter described.

Ileretofore in machines of the class to which this invention relates thework on the vertically-movable table was presented to the cylinders insuch a manner that only a small portion of the peripheries of thecylinders came into operative contact with said work. One of the objectsof my present invention is to so present the work to the cylinders thata greater surface of said cylinders will act upon the work than hasheretofore been deemed possible. To accomplish this object, thefollowing instrumentalities are preferably used:

Referring to Figs. 4and 5, the upper portion of the apron passes overtwo side rollers c or their equivalents, which rollers 'v' slide inguides v in the frame 0 of the machine. These rollers 11 are adapted tobe raised beneath the apron 7.: when the cylinders a are broughttogether and to be lowered when the cylinders are separated. Thismovement of the rollers 12 is accomplished as follows: On the frame 0are pivoted, as at 11 the four levers 12 having slotted upper ends inwhich the ends of the shafts a of the cylinders a rotate. The other endsof these levers o are connected by adjustable links ii to one end of thebell-crank levers o pivoted, as at o, to the frame 0. The other ends ofthese bellcrank levers are slotted and engage with studs v on the boxeso sliding in the guides v and carrying the rollers c. When now thecylinders a move toward each other, the levers o are operated to raisethe rollers o beneath the apron and spread said apron so that it willembrace more than one-third of the periphery of each of the cylinders a.When the cylinders separate,the rollers '0 drop to their normalposition.

In Figs. 12 and 13 a modified form of mechanism for elevating anddepressing the rollers o is illustrated, which mechanism is as follows:The rollers v are carried in the ends of the bellcrank levers o pivoted,as at o, in the frame 0 and having bearing-blocks o sliding in quadrant.slots 12 On each shaft a of cylinders a is mounted an adjustable link v,which is connected to the shorter arm of a bell-crank lever on theopposite side of the machine. From the above description it will beunderstood that as the table ascends and the working rolls are broughtinto oper ative position the rollers t draw the apron away from thetable, so as to surround at least one-third of the periphery of eachWorking roll with the apron and the work laid thereon. By this means theefiiciency of each roll is greatly increased and the work is acted uponwith more speed and better results than heretofore.

Having thus described the nature and objects of my invention, what Iclaim as new, and desire to secure by Letters Patent, is

1. In a machine of the character described, two working rolls orcylinders, a verticallyarranged table adapted to be raised and loweredbetween .said rolls, an apron passed around said table and adapted toreceive the work,and mechanism forspreading said apron away from thetable during the upward movement of said table, whereby a greaterportion of said apron and the work thereon may be presented to theworking rolls, substantially as and for the purposes described.

2. In a machine of the character described, two working rolls orcylinders, a verticallyarranged table adapted to be raised andlowered'between said rolls, an apron adapted to receive the work andpassed around said table, means for shifting said apron on said table,and mechanism for spreading the apron away from the sides of the tableduring the upward movement of said table, substantially as and for thepurposes described.

3. In a machine of the character described, two working rolls orcylinders, a verticallyarranged table adapted to be raised and loweredbetween said rolls, an apron adapted to receive the Work and passingaround said table, means for moving said rolls toward or away from eachother, and mechanism, controlled by said means, for spreading said apronduring the upward movement of the table and the inward movement of therolls, substantially as and for the purposes described.

4. In a machine of the characterdescribed, a vertically-arranged table,an apron passing around said table two rollers arranged between thesides of the table and the apron and means for elevating said rollers tospread the apron away from the sides of said table, substantially as andfor the purposes described. In testimony whereof I have hereunto set mysignature in the presence of two subscribing witnesses.

JOSEPH HALL. \Vitnesses:

ANNA HEINs, ETHEL ANNIE HALL.

